PROCSTAT(1) FreeBSD General Commands Manual PROCSTAT(1)
NAME
procstat - get detailed process information
SYNOPSIS
procstat [--libxo] [-h] [-M core] [-N system] [-w interval] command
[pid ... | core ...]
procstat [--libxo] -a [-h] [-M core] [-N system] [-w interval] command
procstat [--libxo] [-h] [-M core] [-N system] [-w interval] [-b | -c |
-e | -f [-C] | -i [-n] | -j [-n] | -k [-k] | -l | -r [-H] | -s |
-S | -t | -v | -x] [pid ... | core ...]
procstat [--libxo] -a [-h] [-M core] [-N system] [-w interval] [-b | -c |
-e | -f [-C] | -i [-n] | -j [-n] | -k [-k] | -l | -r [-H] | -s |
-S | -t | -v | -x]
procstat [--libxo] -L [-h] [-M core] [-N system] [-w interval] core ...
pargs [--libxo] pid ...
penv [--libxo] pid ...
pwdx [--libxo] pid ...
DESCRIPTION
procstat utility displays detailed information about the processes
identified by the pid arguments, or if the -a flag is used, all
processes. It can also display information extracted from a process core
file, if the core file is specified as the argument.
The pargs, penv and pwdx utilities display the arguments, environment,
and current working directory, respectively of the process specified by
pid argument. They mimic the behavior of Solaris utilities of the same
names.
If the --libxo flag is specified the output is generated via libxo(3) in
a selection of different human and machine readable formats. See
xo_options(7) for details on command line arguments.
The following commands are available for procstat:
advlock
Print information about advisory locks on files. All three types
of locks are listed, BSD-style lockf(2), POSIX-style fcntl(2)
F_SETLK, and remote lockd(8) locks used by NFSv3.
Note that neither the -a option nor pid list can be used to limit
the display of the locks, mostly because some types of locks do
not have local (or any) owning processes.
argument(s) | -c
Display command line arguments for the process.
Substring commands are accepted.
auxv | -x
Display ELF auxiliary vector for the process.
basic Print basic process statistics (this is the default).
binary | -b
Display binary information for the process.
Substring commands are accepted.
credential(s) | -s
Display security credential information for the process.
Substring commands are accepted.
cpuset | cs | -S
Display the cpuset information for the thread.
environment | -e
Display environment variables for the process.
Substring commands are accepted.
file(s) | fd(s) | -f
Display file descriptor information for the process.
If the -C subcommand flag is used then additional capability
information is printed.
kqueue(s) [-v]
Display the events registered in the process kqueues. The filter
name, filter-specific identifier, flags, filter-specific flags,
system and user data, and event status are displayed. If the -v
verbose flag is provided to the subcommand, the values of the ext
array are displayed as well.
For flags, a string is printed consisting of the following
symbols corresponding to set flags:
O EV_ONESHOT
C EV_CLEAR
R EV_RECEIPT
D EV_DISPATCH
d EV_DROP
1 EV_FLAG1
2 EV_FLAG2
For status:
A KNOTE_STATUS_ACTIVE
Q KNOTE_STATUS_QUEUED
D KNOTE_STATUS_DISABLED
d KNOTE_STATUS_DETACHED
K KNOTE_STATUS_KQUEUE
kstack | -k
Display the stacks of kernel threads in the process, excluding
stacks of threads currently running on a CPU in userspace.
If the -v subcommand option is used (or the command flag is
repeated), function offsets as well as function names are
printed.
pargs Display arguments for the process.
penv Display environment variables for the process.
ptlwpinfo | -L
Display LWP info for the process pertaining to its signal driven
exit.
pwdx Display current working directory for the process.
rlimit | -l
Display resource limits for the process.
rlimitusage
Display the usage of the resource limits for the process.
rusage | -r
Display resource usage information for the process.
If the -v (or -H) subcommand flag is used then per-thread
statistics are printed, rather than per-process statistics. The
second field in the table will list the thread ID to which the
row of information corresponds.
signal(s) | -i
Display signal pending and disposition information for the
process.
If the -n subcommand option is used, the signal numbers are shown
instead of signal names.
Substring commands are accepted.
thread(s) | -t
Display thread information for the process.
tsignal(s) | -j
Display signal pending and blocked information for the process's
threads.
If the -n subcommand option is used, the signal numbers are shown
instead of signal names.
Substring commands are accepted.
vm | -v
Display virtual memory mappings for the process.
All options generate output in the format of a table, the first field of
which is the process ID to which the row of information corresponds. The
-h flag may be used to suppress table headers.
The -w flag may be used to specify a wait interval at which to repeat the
printing of the requested process information. If the -w flag is not
specified, the output will not repeat.
Information for VM, file descriptor, and cpuset options is available only
to the owner of a process or the superuser. A cpuset value displayed as
-1 means that the information is either invalid or not available.
Binary Information
Display the process ID, command, and path to the process binary:
PID process ID
COMM command
OSREL osreldate for process binary
PATH path to process binary (if available)
Command Line Arguments
Display the process ID, command, and command line arguments:
PID process ID
COMM command
ARGS command line arguments (if available)
Environment Variables
Display the process ID, command, and environment variables:
PID process ID
COMM command
ENVIRONMENT environment variables (if available)
File Descriptors
Display detailed information about each file descriptor referenced by a
process, including the process ID, command, file descriptor number, and
per-file descriptor object information, such as object type and file
system path. By default, the following information will be printed:
PID process ID
COMM command
FD file descriptor number or cwd/root/jail
T file descriptor type
V vnode type
FLAGS file descriptor flags
REF file descriptor reference count
OFFSET file descriptor offset
PRO network protocol
NAME file path or socket addresses (if available)
The following file descriptor types may be displayed:
e POSIX semaphore
E eventfd
f fifo
h shared memory
i inotify descriptor
k kqueue
m message queue
P process descriptor
p pipe
s socket
t pseudo-terminal master
v vnode
The following vnode types may be displayed:
- not a vnode
b block device
c character device
d directory
f fifo
l symbolic link
r regular file
s socket
x revoked device
The following file descriptor flags may be displayed:
r read
w write
a append
s async
f fsync
n non-blocking
d direct I/O
l lock held
If the -C flag is specified, the vnode type, reference count, and offset
fields will be omitted, and a new capabilities field will be included
listing capabilities, as described in cap_rights_limit(2), present for
each capability descriptor.
The following network protocols may be displayed (grouped by address
family):
AF_INET, AF_INET6
ICM IPPROTO_ICMP; see icmp(4).
IP? unknown protocol.
RAW IPPROTO_RAW; see ip(4).
SCT IPPROTO_SCTP; see sctp(4).
TCP IPPROTO_TCP; see tcp(4).
UDP IPPROTO_UDP; see udp(4).
AF_LOCAL
UDD Datagram socket.
UDS Stream socket.
UDQ Sequential Packet Stream socket.
UD? unknown protocol.
AF_DIVERT
IPD Divert socket; see divert(4).
? unknown address family.
Signal Disposition Information
Display signal pending and disposition for a process:
PID process ID
COMM command
SIG signal name
FLAGS process signal disposition details, three symbols
P if signal is pending in the global process queue; - otherwise.
I if signal delivery disposition is SIG_IGN; - otherwise.
C if the signal will be caught; - otherwise.
If -n switch is given, the signal numbers are shown instead of signal
names.
Thread Signal Information
Display signal pending and blocked for a process's threads:
PID process ID
TID thread ID
COMM command
SIG signal name
FLAGS thread signal delivery status, two symbols
P if signal is pending for the thread, - otherwise
B if signal is blocked in the thread signal mask, - if not
blocked
The -n switch has the same effect as for the -i switch: the signal
numbers are shown instead of signal names.
Kernel Thread Stacks
Display kernel thread stacks for a process, allowing further
interpretation of thread wait channels. If the -k flag is repeated,
function offsets, not just function names, are printed.
This feature requires options STACK or options DDB to be compiled into
the kernel.
PID process ID
TID thread ID
COMM command
TDNAME thread name
KSTACK kernel thread call stack
Resource Limits
Display resource limits for a process:
PID process ID
COMM command
RLIMIT resource limit name
SOFT soft limit
HARD hard limit
Resource Usage
Display resource usage for a process. If the -H flag is specified,
resource usage for individual threads is displayed instead.
PID process ID
TID thread ID (if -H is specified)
COMM command
RESOURCE resource name
VALUE current usage
Security Credentials
Display process credential information:
PID process ID
COMM command
EUID effective user ID
RUID real user ID
SVUID saved user ID
EGID effective group ID
RGID real group ID
SVGID saved group ID
UMASK file creation mode mask
FLAGS credential flags
GROUPS group set
The following credential flags may be displayed:
C capability mode
Thread Information
Display per-thread information, including process ID, per-thread ID,
name, CPU, and execution state:
PID process ID
TID thread ID
COMM command
TDNAME thread name
CPU current or most recent CPU run on
PRI thread priority
STATE thread state
WCHAN thread wait channel
Virtual Memory Mappings
Display process virtual memory mappings, including addresses, mapping
meta-data, and mapped object information:
PID process ID
START starting address of mapping
END ending address of mapping
PRT protection flags
RES resident pages
PRES private resident pages
REF reference count
SHD shadow page count
FLAG mapping flags
TP VM object type
The following protection flags may be displayed:
r read
w write
x execute
The following VM object types may be displayed:
-- none
dd dead
df default
dv device
md device with managed pages (GEM/TTM)
ph physical
sg scatter/gather
sw swap
vn vnode
gd guard (pseudo-type)
The following mapping flags may be displayed:
C copy-on-write
N needs copy
S one or more superpage mappings are used
D grows down (top-down stack)
U grows up (bottom-up stack)
W pages in this range are locked by mlock(2) or mlockall(2)
ELF Auxiliary Vector
Display ELF auxiliary vector values:
PID process ID
COMM command
AUXV auxiliary vector name
VALUE auxiliary vector value
Advisory Lock Information
RW Read/Write type, RO for read, RW for write lock
TYPE Type of the lock, one of FLOCK for flock(2), FCNTL for fcntl(2),
LOCKD for remote
PID Process id of the owner, for FCNTL and remote types
SYSID Remote system id if applicable
FSID File system id where the locked file resize
RDEV rdev for the file system
INO Unique file identifier (inode number) of the locked file on the
file system
START Start offset of the locked range
LEN Length of the locked range. Zero means till EOF
PATH If available, the path of the locked file
EXIT STATUS
The procstat utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
Show binary information about the current shell:
$ procstat binary $$
PID COMM OSREL PATH
46620 bash 1201000 /usr/local/bin/bash
Same as above but showing information about open file descriptors:
$ procstat files $$
PID COMM FD T V FLAGS REF OFFSET PRO NAME
46620 bash text v r r------- - - - /usr/local/bin/bash
46620 bash ctty v c rw------ - - - /dev/pts/12
46620 bash cwd v d r------- - - - /tmp
46620 bash root v d r------- - - - /
46620 bash 0 v c rw------ 7 372071 - /dev/pts/12
46620 bash 1 v c rw------ 7 372071 - /dev/pts/12
46620 bash 2 v c rw------ 7 372071 - /dev/pts/12
46620 bash 255 v c rw------ 7 372071 - /dev/pts/12
Show the arguments used to launch init(8):
$ procstat arguments 1
PID COMM ARGS
1 init /sbin/init --
Extract binary information from a core dump:
$ procstat binary core.36642
PID COMM OSREL PATH
36642 top 1201000 /usr/bin/top
Trying to extract information from a core file generated in a different
major FreeBSD version might show an error like this:
$ procstat mplayer.core
procstat: kinfo_proc structure size mismatch
procstat: procstat_getprocs()
SEE ALSO
fstat(1), ps(1), sockstat(1), cap_enter(2), cap_rights_limit(2),
inotify(2), mlock(2), mlockall(2), libprocstat(3), libxo(3), signal(3),
xo_options(7), ddb(4), divert(4), icmp(4), ip(4), sctp(4), tcp(4),
udp(4), stack(9)
AUTHORS
Robert N M Watson <rwatson@FreeBSD.org>.
libxo(3) support was added by Allan Jude <allanjude@FreeBSD.org>.
Juraj Lutter <juraj@lutter.sk> added the pargs, penv and pwdx
functionality.
BUGS
The display of open file or memory mapping pathnames is implemented using
the kernel's name cache. If a file system does not use the name cache,
or the path to a file is not in the cache, a path will not be displayed.
procstat currently supports extracting data only from a live kernel, and
not from kernel crash dumps.
FreeBSD 15.1-STABLE-HBSD July 16, 2025 PROCSTAT(1)